Driving mechanism for motor-vehicles.



J. D. ROWLAND. DRIVING MECHANISM FOR MOTOR VEHICLES.

APPLICATION IILBD SBPTz17,1912.

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APPLIOATION FILED $EPT.17,1912.

Patented Apr. 15, 1913.

2 SHEETS-SHEET 2.

IZOLUMBIA PLANODRAPH CO.WASNIN|JTON, D. C.

UNITED STATES PATENT onnron...

JOHN DAVID ROWLAND, or BIRMINGHAM, ENGLAND.

DRIVING MECHANISM FOR MOTORVEHIGLES.;

Specification of Letters Patent.

. Patented Apr. 15,1913.

Application filed September 17, 1912. Serial No. 720,727. i

Vehicles, of which the following is a specification.

This invention relates todrivingmechanism for, more especially, four wheel motor road vehicles of the belt or chain driven type, and has for its object to provide improved means for controlling such mechanism. t

It has been previously proposed tomount a pulley on a rear shaft or axle which is movable laterally or parallel to itself and connect such pulley to an expansible pulley on a countershaft which is driven by the engine. It has also been proposedto operate the expansible pulley for increasing or diminishing its effective diameter from the same lever or the like1as imparts lateral movement to the rear :axle. According to this invention the mechanism connected with the expansible pulley iszadapted to permit operation of the said pulley inde} pendently of the rear axle aswell as conjointly with the said axle. 7

Referring to the three accompanying sheets of explanatory dra.Wings:-Figure 1 is a plan and Fig. 2 .a sideelevation of motor vehicle driving mechanism constructed in accordance :with this invention. Figs. 3 and 4 illustrate a portion of the controlling mechanismdn two different positions.

The same reference lettersin the different views indicate the same parts. 1

In carrying the invention into effect as shown, the rear axle a is carried on the ends of a pair of laminated springs 79. Each spring is supported on a pair. of parallel links a and of one of which is pivotedto the frame or chassis e of the vehicle and the other secured to a rotatable cross bar. f. One of the links has an operating handle 9 connected thereto. By means of the handle the springs can be moved horizontally and the axle a thereby moved laterally or parallel to itself. The expansible pulley .or pulleys h, which may be of any convenient and known type and are preferably telesco ic, are mounted on the countershaft 2'. no

part of each pulley is fixed on the shaft.

While the other is feather-keyed and movable axially thereon. Operation of the movableportionis effected by a link and eter of the pulleys is alsoadjusted. The expansible pulleys and pulleys on the rear axle are connected by belts or chains. At the base of the groove in each expansible pulley a loose ring may be provided on which the belt or chain can:run idly when the parts. of

the pulley are fully separated, By the above mechanism constant tension is maintained on the belt atall speeds.

To enable the parts of the enpansible pulleys to be operated without affecting the position ofthe back axle and thereby allow the belts to be suflicientlyslackened forthe pulleys to run idly the following mechanism is employed. :To thelpivoted orrotatable cross bar 7 is secured a lever j, and this is connected to a lever is ona second pivoted or rotatable cross bar Z by a two-part or toggle link we one of the members of which may be 1 constructed in two parts united by a screw coupling n for adjustment purposes. The

cross bar Z is connected to the pulley operating levers 0 by links go and levers 9. On the said bar is also freely mounted a pedallever 7a. The latter is forked at its lower end and made to embracethe bar Z onieach side of the lever'fc. At the junction of the two parts of the toggle link in a foot operated pressure piece ,5 is hinged and this is connectedto the pedal lever r by a linkt. The parts 7 and 8 form virtually one piece adapted to be actw ated by the toe or heel of the driver respectively. Withthe parts of the link in the lever system connected to. the cross bar aforesaid, so that with adjustment of the positlon of the rear axle the effective diamposition: shown in Fig. 3 operation: of the back axle by theihand lever g simultaneouslyactuates thepulley levers 0 causing the pulleys to be expanded or contracted as the. back axle is movedtowarcb or awayfrom. On applying presthe rearof the chassis. sure by means of the heel on the piece 8, the parts of the link at are caused to take up the position shown in Fig. 4. This imparts a Disconnection of the engine without the same is therefore immediately y depressing the piece 8.

axle.

stoppin eifected z tnemelysimple and enables all the-required,

V vehicles as it maybe-also [applied to three I Wheel vehicles. 'Neither is it limitedito the 1 ters :Batent is I:

-* mission member connecting said pulleys, of v I the .expansibleipulley to be actuatedinde- 1* sible drivingpulley and controlling mecha- Copies of this patent. maybe obtainedfor five centsi eaeli,-by addressing the Commissioner of Patents; 7

.to the position shown in Fig. 3. Adjustment vehicles, the coinbinationu'with an expansible driving pul ley, a lateral-1y movable rear To restore theparts of the pulleys and the tension of the belts to their original condif' tion the pedal lever r is actuated-by the toe l of the driver, the pieces and link m being thereby caused through the link 6 to return of the belt totake up slackness due to Wear is efie'cted by the screw coupling a The;: adj aoent ends of the parts of the link forming the toggle joint are suitably shaped in any ordinary manner to interengage or 00- l operate for limitingthe relativemoyement; of the parts to any convenient range suohas that shown in Figs. 3 and 4. g

It may aOftEIl be more convenient to slacken t the beltbefore adjustment of the pulleys is i efi'eeted and the back aaxle moved parallel to k itself. This is equivalent tounclutchin-g the engine of a motor car beforeichangingthej speed gears. A spring {a servesto prevent, accidental moving of the toggle joint from 1 the Fig. 3 tor-the Fig. 4 position. x

TMechanism as ,herein described is excontrol over the driving mechanism 'to, be obtained in ayery convenient-manner; 1 'Theninventlonis not limited to ZEOllI'QaVVhBGl particular operating:mechanismdescribed. 2 -.Having :thus ,describedamyinvention what i I"c1aim':asznevv'-and desireto secure by Leti 14in \driying'mechanism for motor road axle, a driven pulley :on the axle. and .aatransactuating zmeans ton-said iiaxie and -expansible pulley, a jointed linklinterposedin said actuating means, and :a 'pedal. whereby the jointed :link can be operated tor permitting pendent-1y [of the axle, substantially "1318 described. 7 2.;i'In driving mechanism forrnotor road vehicles, the combination with Jan expannism therefor, ia laterally movablemrear-raxle, a drivven pulley on the axle, and a transmission-member connecting said pulleys, of a hand ilever,w1neans connecting said lever to E of said links, a cross shaft connected to said links and a lever thereom-an operating lever tor-the expansible pulley-,a second crossshaft of a jointed linkconnecting the same lever- I "to thecontrolling mechanism of the expanv5 sible pulley, and .a pair of pedals connected together and respectively adapted to deflect and restore the parts of the jointed link to permit operation of the expansible pulley independently of the rear axle, substantially as described.

3. In driving mechanism for motor road vehlcles, the combmatlon With an 'eXpansrble driying pulley, a laterally movable rear "flexible transmission member connecting said pulleys, of a hand lever, means in conaxle, a driven pulley on said axle, and :1

junction with said lever for-actuating the rear axle, an operating letver in conjunction with the expansible pulley, a cross shaft, a

link connecting said pulley operating lever tothe cross shaft, a jointed linkconnecting said link to the saidjhand lever, .-a 'pedal lever pivoted on said cross shaft, and a pedal 7 aittac-hedto junction of parts of jointed link ,75 and connected to pedal lever, substantially as described. I

a. In L driving mechanism .tor motor road vehicles, the combination with an expansible driving pulleyya laterally movable rear the rear axle, hinged Ilinks supporting the v saidisprings, a hand ieyer'conneoted {to one a and levers on saidsecond'shait, a link con: necting'the pulley actuating-lever to one of the levers on thesecond .gc-ross shaft a jointed 0nd cross shaft to the leyer on thefirst men tioned cross shaft,pa-pedal lever pivoted on secondcross shaft, a pedal attached to junction tofvmemgber-s-of jointed link and the said" 95 pedal lever, and a spring attached to' the pedal lever, substantially as described. In testimony whereof I have signed my name to' t'his specification in the presence of two subscribing Wlt-HBSSGS.

JOHN Witnesses:

.JonN, MORGAN, EDWARD '-TILL.

axle,a drivenpulleyon said axle andabelt connecting said ,pulleys, of springs carrying link connecting another-(of the levers on sec 9:

DAVID ROWLAND- L 

